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qcacld-3.0: Prevent wlan suspend if conn in progress

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Currently the driver does not check if the state
is key exchange in progress and suspends wlan
before set-key happens which further results in
FW also in wake up state.
This would result in delayed EAP exchange, and also
in power loss.

Scenario:-
1. Turn on STA and try to connect to enterprise network
2. Turn off display.

Here the display turn off would trigger APPS suspend
while the STA is trying to connect, and authenticate
and since there is no check in driver to prevent
suspend in set key in progress state, it would result
in a FW assert, as the expectation of FW is to allow
suspend only after set key has been done.

Fix is to prevent WLAN-suspend in case of connection
in progress, and allow suspend only in connected
and authenticated state.

Change-Id: Ic173116f7ba424005d938a43c75831a6a4dc874c
CRs-Fixed: 2512866
This commit is contained in:
gaurank kathpalia 2019-08-21 16:32:25 +05:30 • committed by nshrivas
commit e5724cc36e
1 changed files with 6 additions and 14 deletions
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20
core/hdd/src/wlan_hdd_power.c
View file

@ -1806,23 +1806,15 @@ static int __wlan_hdd_cfg80211_suspend_wlan(struct wiphy *wiphy,
ucfg_p2p_cleanup_tx_by_psoc(hdd_ctx->psoc);
ucfg_p2p_cleanup_roc_by_psoc(hdd_ctx->psoc);
/* Stop ongoing scan on each interface */
hdd_for_each_adapter(hdd_ctx, adapter) {
if (sme_neighbor_middle_of_roaming(mac_handle,
adapter->vdev_id) ||
hdd_is_roaming_in_progress(hdd_ctx)) {
hdd_err("Roaming in progress, do not allow suspend");
wlan_hdd_inc_suspend_stats(hdd_ctx,
SUSPEND_FAIL_ROAM);
return -EAGAIN;
}
wlan_abort_scan(hdd_ctx->pdev, INVAL_PDEV_ID,
adapter->vdev_id, INVALID_SCAN_ID, false);
if (hdd_is_connection_in_progress(NULL, NULL)) {
hdd_err_rl("Connection is in progress, rejecting suspend");
return -EINVAL;
}
/* flush any pending powersave timers */
/* abort ongoing scan and flush any pending powersave timers */
hdd_for_each_adapter(hdd_ctx, adapter) {
wlan_abort_scan(hdd_ctx->pdev, INVAL_PDEV_ID,
adapter->vdev_id, INVALID_SCAN_ID, false);
if (wlan_hdd_validate_vdev_id(adapter->vdev_id))
continue;